Chapter 15 discusses the new Digital Operational Resilience Act (DORA) in the context of cryptoassets and decentralised finance. Section 15.1 introduces the cybersecurity challenge, while Section 15.2 explains DORA’s objectives, approach, and its link to MiCA. Then, Section 15.3 provides an analysis of DORA’s scope, and Section 15.4 gives an overview of DORA’s tools, explaining each of DORA’s Chapters II–VII. Then, Section 15.5 delves into the crypto-specific matters, explaining the MiCA plus DORA situation and analysing the difficult issues of applying DORA’s concepts of “financial entities” and “ICT third-party service providers” in the context of decentralised finance, including fully decentralised crypto networks. Section 15.6 concludes.